Can-body flanger.



F. BRUGKMANN, JR. & 0. DEMPEWOLF. CAN BODY FLANGER. APPLICATION FILED FEB.3,1910.

1,049,663. Patented Jan. 7,1913.

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F. BRiI CKMANN, JR. & 0. DEMPEWOLF. CAN BODY FLANGER. APPLIGATION FILED PEB.3,1910.

1,049,663. v Patented Jan.7,1913.

5 SHEETS-SHEET 2.'

. WITNESSE'S: Z W8 F. BRficKM ANN, JR. & 0. DEMPEWOLR,

GAN BODY FLANGER. -APPLIOATION FILED FEB.3,1910.

Patented Jan. 7,1913.

' a I gnw T WlTN E888 v i i H EN 0M /L @L M BY F. BRfiGKMANN, JR. & 0. DEMPEWOLF. CAN BODY FLANGER. AIiBLIOATION FILED FBB.3,1910,

Patented Jan. 7, 1913.

5 snEETs-s BET 4.

SSES:

F. BRfiGKMANN, JR. & 0. DBMPEWOLF. (JAN BODY FLANGER. APPLIUATION FILED IBB.3, 1910.

1,049,663, Pa ten'ted Jan. 7, 1913.

5 SHEETS-SHEET 5.

7 7&1.

' on the ends of UNITED, STATES PATENT OFFICE.

FRANZ BRooKMANN, .13., AND

OTTO DEMPEWOLF, OF BRUNSWICK, GERMANY, ASSIGNORS TO PIRIEIIMIIEIR. & BRU'CKMANN,

0F BRUNSWICK, GERMANY.

CAN-BODY .FLANGER.

Specification of Letters Patent.

To all whom it may concern:

Be it known that we, FRANZ Bm'icm. MANN, J r., and O'rro DnMPnwoLr, residents of Brunswick, Germany, have invented certain new and useful Improvements in Can- Body F langers,'of which the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

ur invention relates to a development of the machine. for flanging or otherwise operating on can bodies, which is set forth in the prior patent to Franz Briickmann, Jr., and Otto Dempewolf, dated August 4, 1908, No. 895067. In that prior patent and in the example of the invention given in this specificationthe machine-is shown as organized for the purpose of forming flanges the can bodies preparatory to the applicat-ion of the heads thereto. It may, however, be adaptedto other operations without departing from the essential, principle of the invention.

The presentinvention involves certain improvements'in the general organism of the machine, in the construction and arrangement ofthe flanging heads which engage the ends of the can body during the operation.

and coact therewith, in the construction and arrangement of the chutes or devices-by which the can bodies are fed to the flanging devices and invarious other features of construction and combination of parts all of which will be fully set forth hereinafter and particularly pointed out in the claims.

of the flanging tool Reference is now had to the accompany ing drawings, which as has been said, represent as an' example the preferred embodiment of the invention, and in which drawm s Figure 1 is a sectional plan of the machine; Fig. 2 is a diagrammatic view showing the scheme of the machine and, illustrating among other things, the carrying on of four distinct operations simultaneously; Fig. 3' is an enlarged sectional view taken through the flanging heads and chute; Fig. 4 is a detail view of the flanging wheel of which there may be either oneor more than one-in the machine; Fig. 5 is a view illustrating the movement of the can bodies through the chute; Fig. 6 is a sectional view showing the flanging head when it first en gages the can body; and Fig. 7 is a similar heads depends upon the view showing the movement of the anvil ring during the formation of the flange.

Preferably the machine is arranged with- Patented Jan. 7,1913.

central shaft 11, thesame being revolubly mounted and having at one end a. spur wheel 12 or other devices forrotat-ing it. This shaft 11 carries the flanging wheels 14 which are fast thereto to turn therewith, and which will be, described in detail herein after. In addition the shaft 11 carries cams 15- for operating the flanging heads. In each side, 10 of the frame are mounted two rotary shafts 16. These shafts are opposite each 'otherin pairs and carry the flanging heads. The number of pairs of shafts 16 and the number of airs of flanging dhsiredjcapacity of the machine and these parts might be grouped around the periphery. of the flanging wheels in any number within the limits of the size ofthe wheels. Thus, as shown in Fig. 2, four pairs of flanging heads may be provided, the positions 15 indicating the four positions of such heads. chutes 17 are also, tion shown in Fig. 2, four in number, corresponding respectively with the four pairs of flanging heads. In Fig. 1, for convenience, only two pairs of flanging heads are illustrated. It should be understood of course that the invention is 'by no means limited to any flanging heads, When, however, the. arrangement illustrated in Fig. 2 is employed, the efficiency of the machine is greatly increased, since it allows four cans to be flanged at the same time and, as'will be seen hereinafter, by a single rotation of the flanging wheels. Further, one or two flanging wheels may be employed, according as it may be desired to flange one or' both ends of the can simultaneously The shafts 16 carrying the flanging heads are provided with gears 18 at one side of the machine meshing withtheuppergear 12. These gears 18 are splined on the shafts 16 so that the shafts may move in the gears but are forced to turn therewith. v This axial The. canaccordingto the construcspecific number of pairs and in and out, which movement is timed to take place in. a certain relation to the fianging Wheels. as will hereinafter appear.

Fig. 3 illustrates the details of the flanging heads and their coacting parts. As is there shown the chute 17 carrying the can bodies a on which the flanges a are to be formed is provided in its sides with openings 17 These openings are opposite each other and the coacting pair of flangingheads are arranged so that they will move through said openings into the chute. Each flanging head comprises a body 2410f form corresponding to the cross-sectional form of the can, which bodies have their hubs fastened to the shafts 16 and their peripheries formed with shoulders 26 against which the flanges are bent. The flanging heads also embody, each of them, a frusto-conical centering plate or pilot 27, which is adapted to enter the can body and guide the same into proper engagement with the shoulder 26. At, the inner side of the head 24 is arranged an anvil ring 28, which fits against the outer side of the centering plate 27 and is of a diameter equal to the diameter of the can and to the reduced portion of the head 24, formed by the shoulder 26. This anvil ring 28 is held as a floating member by means of a number of dogs 29 pivoted in the head 24 which is hollow to receive them and pressed by springs 30. Normally these dogs and springs hold the anvil ring 28 central and concentric to the head 24, but when the flanging device is in operation the springs give and allow the anvil ring to be thrown at an eccentric position as shown in Fig. 7. The instant that the pressure of the flanging tool is relaxed the springs returnthe anvil-ring to its normal or concentric position. When, therefore, the fianging heads move into the chute 17, under the action of the levers 19 and their coordinate parts, the pilot or guide plates 27 center the can body with respect to the anvil ring and head 24 and the continued movement of the heads causes the anvil ring 28 to enter the can body and the ends of the can body to engage the shoulders 26 at which time the movement of the flanging heads inward is arrested and such heads dwell in their inward position with the can engaged with them as 65 shown in Fig. 6. At this time the fianging 'the parts are so timed wheels with their tools become operative and during the formation of the flange the anvil ring of the flanging head assumes the position shown in Flg. 7.

As has been pointed out, the flanging heads are arranged in pairs at stations around the periphery of the fianging wheels. These flang ng wheels are provided on their peripheries with flanging tools which are shaped to perform the necessary operations on the ends of the can body to produce the As .shown in Fig. 4, the wheel has three fianging. tools which are preferably fastened to the main part of the wheel and are of such material as may be suited to their'work. These tools are shaped and of different widths so that the flanging wheel rotatin in the' direction of the arrow in Fig. 4 %rings the tools 32, 33 and 34 successively into operation. In addition to said tools 32, 33 and 34 on the periphery of the wheel, said wheel is formed with a concentric segment 31 constituting the most reduced diameter of the fianging wheel and that as the can body falls into position opposite the flanging heads the concentric portions 31 of the wheels 14 are opposite the can body, thus permitting free movement of the can into position. The Hanging heads are then moved into en- 'gagementf with the can and the tools on the flanging wheel brought successively into engagement with the can producing the flange thereon. As'the portion 31 of, the tool wheel approaches the flanged can in the revolution 10 of the wheel, the heads are withdrawnfrom engagement with the can, which is discharged, and a second can body is brought into position. Thefianging wheels lie in positions corresponding to the ends of the can bodyand as shown in Fig. 5 they pass through openings 17 b in the chutes 17 so that they may act on the cans.

The construction of the. can chutes and the devices vfor controlling the movement of the cans is important and will now be described.

The can body chutes may extend from any point desired. For example, thev may be directly connected with the can body former, i. 'e., the machine which makes the can bodies and they may be made to carry superimposed any desired number of can bodies ready to be supplied to the flanging devices. It is found, however, that the can bodies in the lower part of the chute, bearing the weight of the superimposed cans, are caused to flatten by this weight and if the chute is of a size equal only to the diameter of the can bodies, such bodies would bind in the chute. To overcome this difliculty, we widen the chute at its lower portion in' the manner indicated in Fig. 5, so that'ample room is given for the can bodies to pass,

. notwithstanding the spreading or flattening thereof. By thus widening the chute, however, a further difliculty is presented in that the can bodies might not be presented in proper position to the flanging devices. This proper position is shown in Fig. as opposite the opening 17 To overcome this secondary disadvantage we cause the lower caused to take its proper'position opposi upon, we provide the stop bars shown in bars are arranged.

the flangin heads'no-twithstanding that t e chute is wider than the cans. When the can bod below the one being operated on is disc iarged from the chute, the flange body immediately above drops to the lower end of the chute and the third can bod then falls toward the fianging wheel and takes the place of the preceding body by reason of the curving sides-thereof which throw the third or following body inward into proper position.

In order to sustain the can bodiesin the chute and also to allow them to fallfroin the same as fast asthey have been operated Figs. 3 and 5. Said sto to enter the chute 17 t rough openin therein and they are mounted to slidei 17 ori-' zontally in bearings 36. mounted on the frame sections 10 or otherwise.

, Said stop bars are actuated by levers 37 the lower ends of WhlCll engage between lugs .38 fastened on the slide bolts or stops 35 and the upper ends of which engage the collars 39 fastened to move in synchronism with the shafts 16. As the shafts 16 move inward to engage the flanging heads with the can body next to be acted upon, the stop bars 35 are, it will be seen, moved outward. At this timethe flangin heads will'holdt-he can body between t em and the pileof cans in the'chute will thus be supported. Simultaneously the bolts 35 having been withdrawn the bottommost body falls finished from the chute. The

instant that the flanging heads are withdrawn, the bolts 35 are-shot inward and as the second finished can body falls from the flanging heads it is intercepted and supported by the bolts. 1

If desired, at the entry'of the canbodies into the chutes, they may be regulated to prevent too great a pile from entering the chute and hence to avoid an excessive pressure on the cans at the'loweryend thereof. This may be accomplished by stop b lts 40, which, like the stop bolts 35, work and.

out in the chutes.- These stop bolts 40, however, should be arranged at the receiving ends of the chutes and may be operated automatically in any manner desired; for example by a linkage 10 driven through a rod or other connection 42 from a cam race 43 on one of the wheels 14: or otherwise.

The organiaed operation of the machine may be traced as follows: The cans are supplied to the chutes and the operation of the machine started by applying primary power to any one of the shafts 11 or 16 through a band pulley thereon or in any other desired manner. Upon the rotation of the flanging 'wheels 14 the flanging heads are caused to move inward to engage the can body opposite them at the instant that the concentric portion 31 of the flanging wheel is opposite the opening 1'7 in the chute 17, thus allowmg a can body to fall into position White said portion 31 of the flanging wheel is op p-osite the can body so that the can body will not be obstructed: The flanging heads approach each other until the can body assumes the positioniindicated in-Fig. 6. At this time the first flanging tool (32) on the wheel '14: moves into action striking the side of the can body directly opposite the anvil ring 28 andthrowing this ring to eccentric position. This bends the can body down over the inner edge of the flanging head 24 formingthe flange as illustrated in Fig. 7

-The flanging tools successively roll against the can body and successively form the various stages of the flange. During this time theflanging head is rotating continuously and the anvil ring 28 bears inside of the can body snugly fitting against it so that the shape of the can body is retained and crushing of the same is avoided. The flanging tools 32, 33 and 34 on the wheels 14 are of such a length that the circumference of the cans is equal to the length of each flanging tool so that each tool runs completely around the can and the entire circumference of the can is therefore acted upon by each tool. As soon as the flanging operation is complete the wheel 14 again presents the surface 31 to the can, but since this surface does not contact with the can the springs 30 are per mitted to return the anvil ring 28 to its con-. centric position. At this instant the flang-. ing heads are withdrawn and the previously retracted stop bars 35 return to the chute with the result that as the flangedcan fallsfrom the flanging heads it is engaged with and supported by the stop bolts so that the next following can strikes the curved top of 1. The combination of a wheel or disk having a plurality of tool surfaces on its periphery adapted successively to act on the work, means for mounting and rotating said member, a plurality of chut'es leading the work to different points around the periphcry of said member and means for holding the work during the operation of said tool surfaces thereon whereby a plurality of pieces of work may be simultaneously subjected to the action of said tool member.

2. In a machine for flanging can bodies, the combination of a shaft, a pilot member carried thereby, a head also carried by the shaft, an anvil ring surrounding the shaft between the head and pilot member, means for yieldingly sustaining the anvil ring and a flanging tool coacting with the anvil ring, the said means for mounting the anvil ring comprising dogs pivoted in the head and engaging the anvil ring and springs pressing the dogs, said springs being arranged radially within the head.

3. In a machine for manufacturing cans, the combination of a chute, tools entering the chute to act on the can, a stop bolt movable in and out of the chute below the tools to sustain'the cans in the chute and a connection between the stop bolt and one of said tools to withdraw the stop bolt from the chute when said tool is in operation.

4. In a machine for manufacturing cans, the combination with the tool acting on the can, of a chute to receive the can bodies and lead them to said tool, said chute being provided with an aperture through which the tool has access to the can, the can bodies lying superimposed in the chute and the chute being Wider at its lower portion than the diameter of the can bodies, for the purpose specified.

5. In a machine for manufacturing cans, the combination of a tool to act on the can body, a chute to carry the can body to said tool, the chute being wider than the can bodies opposite the tool and a means below the tool for offsetting the can body at said point, whereby to cause the can body firstabove-na-med toroll laterally in the chute toward the tool.

6. In a machine for manufacturing cans, the combination of a tool adapted to act on the can body, a chute to conduct the can bodies to and away from said tool, said chute having an extension below the point of contact of the can with the tool, the wall of said extension adjacent said tool being inclined away from said tool, said chute being wider than the diameter of the can body and being provided below the point of engagement of the tool and can body with a movable stop bolt.

7. In a: machine for flanging can bodies,

.the combination of flanger heads mounted to rotate and one of said heads movable axially, a flanging wheel coacting with one of said flanger heads, means for moving axially the said axially movable head and a cam on the flanger wheel to drive said means.

8. A machine for flanging can bodies com: prising flanger heads mounted to rotate and to move axially toward and from each other, flanger wheels coacting with the heads, means for rotating the flanger heads, means for moving the flanger heads axially and cams on the flanger wheels to drive the lastnamed means.

In testimony whereof I. have signed my name to this specification in the presence of two subscribing witnesses.

FRANZ BRUGKMANN,J1:. OTTO DEMPEWOLF.

Witnesses:

,WM. HEYDECKE, Max. KARCHE. 

